Aubrey Glass has a collection of potential suicide notes—just in case. And now, five years—and five notes—after Aubrey has left her hometown, Rachel's the one who goes and kills herself. Aubrey can't believe her luck.

But Rachel's death doesn't leave Aubrey in peace. There's a voice mail from her former friend, left only days before her death, that she can't bring herself to listen to—and worse, a macabre memorial-turned-high-school-reunion that promises the opportunity to catch up with everyone . . . including the man responsible for everything that went wrong between Aubrey and Rachel.

In the days leading up to the funeral and infamous after-party, Aubrey slips seamlessly between her past and present. Memories of friendship tangle with painful new encounters, while underneath it all Aubrey feels the rush of something closing in, something she can no longer run from. And when the past and present collide in one devastating night, nothing will be the same again.

But facing the future means confronting herself and a shattering truth. Now Aubrey must decide what will define her: what lies behind . . . or what waits ahead.